Five-degree-of-freedom follow-up support system for mud-water balance shield comprehensive simulation test bench

Abstract

The invention discloses a five-degree-of-freedom follow-up support system applied to a mud-water balance shield comprehensive simulation test bench. The bottom of a floating top plate is hinged with the top of a floating support plate. The floating top plate rotates about the axis of a hinge shaft. The bottom of the floating support plate is vertically connected with the top of a support bottom plate through a support hydraulic cylinder. A number of heavy-duty universal balls are uniformly arranged at the bottom of the support bottom plate. A rodless cavity of the support hydraulic cylinder isconnected with the A port of a three-way pressure reducing valve. A rod cavity is connected in parallel with a fuel tank. The T port of the three-way pressure reducing valve is connected with the fuel tank. A motor is connected with the shaft end of a hydraulic pump through a coupling. The input end of the hydraulic pump is connected with the fuel tank. The output end of the hydraulic pump is connected with the P port of the three-way pressure reducing valve through a check valve. An overflow valve is connected in parallel with the input and output ends of the hydraulic pump. According to theinvention, the system can support a shield body, offsets the self-weight of the shield body, has the advantages of strong motion capability and flexible control, and is suitable for the posture simulation and adjustment test of a mud-water shield.

Description

technical field [0001] The invention relates to a five-degree-of-freedom follow-up support system for a mud-water balance shield comprehensive simulation test bench, which is particularly suitable for motion simulation of mud-water shield gesture simulation and adjustment of the five-degree-of-freedom test bench. [0002] technical background [0003] During the excavation process of the mud-water shield, there will be serpentine excavation, that is, there is a deviation between the excavation trajectory and the predetermined trajectory. It is necessary to correct the trajectory of the shield machine and adjust the attitude of the mud-water shield machine. Therefore, the adjustment of the shield attitude is An important part of the shield tunneling process. Most of the research work on attitude adjustment is carried out through test benches. The attitude and load simulation test system of the existing slurry shield machine test bed mostly uses the propulsion hydraulic cylind...

AI Technical Summary

Problems solved by technology

The degree of freedom of the entire test bench is 1, and it is difficult to simulate the load complexity and multi-degree-of-freedom of attitude of mud-water shield in tunneling conditions

The test bench using the load simulation mechanism of the six-degree-of-freedom hydraulic platform can support the cutter head and study the force transmission characteristics of the cutter head. With 6 degrees of freedom, it can simulate the load complexity of the mud-water shield in the tunneling condition. , but it is difficult to realize the parallel mechanism composed of several groups of hydraulic cylinders at the tail of the shield to provide propulsion for the simulation of the attitude adjustment of the shield

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